Yup.
Dissapointed the R5 came with 3 wire fans. So I'll replace the 2 that came with the case and add a second to the front with 4 wire fans. I'm going with 10 drives so there will also be 2 drives in the 5.25 bay with adapters. Not 100% how temps for those to drives will be. I'll have to monitor them closely in the begining. If it becomes a problem, I'll open up a top vent, or remove the covers to the 5.25 bay
So quick update:
the x10SL7-F came with 6 sata cables. I needed to order 5 more sata cables. 1 sata cable was nicked exposing the wire inside. A Buck each on ebay. The box is put together, flashed to IT ver 20, FreeNAS latest 9.3.1 is installed, and running memcheck86 right now. I'll let that run for at least 3 passes. Thinking of disconnecting the power and reset button wires from the MB. Kids hands can't stay away from buttons. I can turn the power on off reset whatever via ipmi anyway. Also ordered an EATON 1500 UPS.
Slowly coming together.